diff --git a/src/ScriptEditor/ui/OptionsModal.tsx b/src/ScriptEditor/ui/OptionsModal.tsx
index 65e12db1f..70fb9e361 100644
--- a/src/ScriptEditor/ui/OptionsModal.tsx
+++ b/src/ScriptEditor/ui/OptionsModal.tsx
@@ -9,10 +9,6 @@ import Select from "@mui/material/Select";
 import Switch from "@mui/material/Switch";
 import MenuItem from "@mui/material/MenuItem";
 import TextField from "@mui/material/TextField";
-import EditIcon from '@mui/icons-material/Edit';
-import SaveIcon from '@mui/icons-material/Save';
-
-import { ThemeEditorModal } from "./ThemeEditorModal";
 
 interface IProps {
   options: Options;
@@ -27,7 +23,6 @@ export function OptionsModal(props: IProps): React.ReactElement {
   const [fontSize, setFontSize] = useState(props.options.fontSize);
   const [wordWrap, setWordWrap] = useState(props.options.wordWrap);
   const [vim, setVim] = useState(props.options.vim);
-  const [themeEditorOpen, setThemeEditorOpen] = useState(false);
 
   function save(): void {
     props.save({
@@ -48,10 +43,6 @@ export function OptionsModal(props: IProps): React.ReactElement {
 
   return (
     <Modal open={props.open} onClose={props.onClose}>
-      <ThemeEditorModal
-        open={themeEditorOpen}
-        onClose={() => setThemeEditorOpen(false)}
-      />
       <Box display="flex" flexDirection="row" alignItems="center">
         <Typography>Theme: </Typography>
         <Select onChange={(event) => setTheme(event.target.value)} value={theme}>
@@ -62,11 +53,7 @@ export function OptionsModal(props: IProps): React.ReactElement {
           <MenuItem value="light">light</MenuItem>
           <MenuItem value="dracula">dracula</MenuItem>
           <MenuItem value="one-dark">one-dark</MenuItem>
-          <MenuItem value="customTheme">Custom theme</MenuItem>
         </Select>
-        <Button onClick={() => setThemeEditorOpen(true)} sx={{ mx: 1 }} startIcon={<EditIcon />}>
-          Edit custom theme
-        </Button>
       </Box>
 
       <Box display="flex" flexDirection="row" alignItems="center">
@@ -93,7 +80,7 @@ export function OptionsModal(props: IProps): React.ReactElement {
         <TextField type="number" label="Font size" value={fontSize} onChange={onFontChange} />
       </Box>
       <br />
-      <Button onClick={save} startIcon={<SaveIcon />}>Save</Button>
+      <Button onClick={save}>Save</Button>
     </Modal>
   );
 }
diff --git a/src/ScriptEditor/ui/ScriptEditorRoot.tsx b/src/ScriptEditor/ui/ScriptEditorRoot.tsx
index 2dc20212b..1e3d529d9 100644
--- a/src/ScriptEditor/ui/ScriptEditorRoot.tsx
+++ b/src/ScriptEditor/ui/ScriptEditorRoot.tsx
@@ -25,7 +25,7 @@ import { Settings } from "../../Settings/Settings";
 import { iTutorialNextStep, ITutorial, iTutorialSteps } from "../../InteractiveTutorial";
 import { debounce } from "lodash";
 import { saveObject } from "../../SaveObject";
-import { loadThemes, makeTheme, sanitizeTheme } from "./themes";
+import { loadThemes } from "./themes";
 import { GetServer } from "../../Server/AllServers";
 
 import Button from "@mui/material/Button";
@@ -362,8 +362,6 @@ export function Root(props: IProps): React.ReactElement {
     monaco.languages.typescript.javascriptDefaults.addExtraLib(source, "netscript.d.ts");
     monaco.languages.typescript.typescriptDefaults.addExtraLib(source, "netscript.d.ts");
     loadThemes(monaco);
-    sanitizeTheme(Settings.EditorTheme);
-    monaco.editor.defineTheme("customTheme", makeTheme(Settings.EditorTheme));
   }
 
   // When the editor is mounted
@@ -995,11 +993,7 @@ export function Root(props: IProps): React.ReactElement {
         </Box>
         <OptionsModal
           open={optionsOpen}
-          onClose={() => {
-            sanitizeTheme(Settings.EditorTheme);
-            monacoRef.current?.editor.defineTheme("customTheme", makeTheme(Settings.EditorTheme));
-            setOptionsOpen(false);
-          }}
+          onClose={() => setOptionsOpen(false)}
           options={{
             theme: Settings.MonacoTheme,
             insertSpaces: Settings.MonacoInsertSpaces,
@@ -1008,8 +1002,6 @@ export function Root(props: IProps): React.ReactElement {
             vim: Settings.MonacoVim,
           }}
           save={(options: Options) => {
-            sanitizeTheme(Settings.EditorTheme);
-            monacoRef.current?.editor.defineTheme("customTheme", makeTheme(Settings.EditorTheme));
             setOptions(options);
             Settings.MonacoTheme = options.theme;
             Settings.MonacoInsertSpaces = options.insertSpaces;
diff --git a/src/ScriptEditor/ui/ThemeEditorModal.tsx b/src/ScriptEditor/ui/ThemeEditorModal.tsx
deleted file mode 100644
index 0bf75ed03..000000000
--- a/src/ScriptEditor/ui/ThemeEditorModal.tsx
+++ /dev/null
@@ -1,276 +0,0 @@
-import React, { useState } from "react";
-import { Modal } from "../../ui/React/Modal";
-import { defaultMonacoTheme, IScriptEditorTheme } from "./themes";
-
-import Typography from "@mui/material/Typography";
-import Button from "@mui/material/Button";
-import Box from "@mui/material/Box";
-import Tooltip from "@mui/material/Tooltip";
-import TextField from "@mui/material/TextField";
-import Paper from "@mui/material/Paper";
-import IconButton from "@mui/material/IconButton";
-import ReplyIcon from "@mui/icons-material/Reply";
-import HistoryIcon from '@mui/icons-material/History';
-import SaveIcon from '@mui/icons-material/Save';
-
-import { Settings } from "../../Settings/Settings";
-import { OptionSwitch } from "../../ui/React/OptionSwitch";
-import _ from "lodash";
-
-import { Color, ColorPicker } from "material-ui-color";
-
-interface IProps {
-  onClose: () => void;
-  open: boolean;
-}
-
-interface IColorEditorProps {
-  label: string;
-  themePath: string;
-  color: string | undefined;
-  onColorChange: (name: string, value: string) => void;
-  defaultColor: string;
-}
-
-// Slightly tweaked version of the same function found in game options
-function ColorEditor({ label, themePath, onColorChange, color, defaultColor }: IColorEditorProps): React.ReactElement {
-  if (color === undefined) {
-    console.error(`color ${themePath} was undefined, reverting to default`);
-    color = defaultColor;
-  }
-
-  return (
-    <>
-      <Tooltip title={label}>
-        <span>
-          <TextField
-            label={themePath}
-            value={"#" + color}
-            sx={{ display: "block", my: 1 }}
-            InputProps={{
-              startAdornment: (
-                <>
-                  <ColorPicker
-                    hideTextfield
-                    deferred
-                    value={"#" + color}
-                    onChange={(newColor: Color) => onColorChange(themePath, newColor.hex)}
-                    disableAlpha
-                  />
-                </>
-              ),
-              endAdornment: (
-                <>
-                  <IconButton onClick={() => onColorChange(themePath, defaultColor)}>
-                    <ReplyIcon color="primary" />
-                  </IconButton>
-                </>
-              ),
-            }}
-          />
-        </span>
-      </Tooltip>
-    </>
-  );
-}
-
-export function ThemeEditorModal(props: IProps): React.ReactElement {
-  const setRerender = useState(false)[1];
-  function rerender(): void {
-    setRerender((o) => !o);
-  }
-
-  // Need to deep copy the object since it has nested attributes
-  const [themeCopy, setThemeCopy] = useState<IScriptEditorTheme>(JSON.parse(JSON.stringify(Settings.EditorTheme)));
-
-  function onColorChange(name: string, value: string): void {
-    setThemeCopy(_.set(themeCopy, name, value));
-    rerender();
-  }
-
-  function onThemeChange(event: React.ChangeEvent<HTMLInputElement>): void {
-    try {
-      const importedTheme = JSON.parse(event.target.value);
-      if (typeof importedTheme !== "object") return;
-      setThemeCopy(importedTheme);
-    } catch (err) {
-      // ignore
-    }
-  }
-
-  return (
-    <Modal open={props.open} onClose={() => {
-      setThemeCopy(Settings.EditorTheme);
-      props.onClose();
-    }}>
-      <Typography variant="h4">Customize Editor theme</Typography>
-      <Typography>Hover over input boxes for more information</Typography>
-      <Paper sx={{ p: 1, my: 1 }}>
-        <OptionSwitch
-          checked={themeCopy.base === "vs"}
-          onChange={(val) => {
-            setThemeCopy(_.set(themeCopy, "base", val ? "vs" : "vs-dark"));
-            rerender();
-          }}
-          text="Use light theme as base"
-          tooltip={
-            <>
-              If enabled, the <code>vs</code> light theme will be used as the
-              theme base, otherwise, <code>vs-dark</code> will be used.
-            </>
-          }
-        />
-        <Box display="grid" sx={{ gridTemplateColumns: "1fr 1fr", width: "fit-content", gap: 1 }}>
-          <Box>
-            <Typography variant="h6">UI</Typography>
-            <ColorEditor
-              label="Background color"
-              themePath="common.bg"
-              onColorChange={onColorChange}
-              color={themeCopy.common.bg}
-              defaultColor={defaultMonacoTheme.common.bg}
-            />
-            <ColorEditor
-              label="Current line and minimap background color"
-              themePath="ui.line"
-              onColorChange={onColorChange}
-              color={themeCopy.ui.line}
-              defaultColor={defaultMonacoTheme.ui.line}
-            />
-            <ColorEditor
-              label="Base text color"
-              themePath="common.fg"
-              onColorChange={onColorChange}
-              color={themeCopy.common.fg}
-              defaultColor={defaultMonacoTheme.common.fg}
-            />
-            <ColorEditor
-              label="Popup background color"
-              themePath="ui.panel.bg"
-              onColorChange={onColorChange}
-              color={themeCopy.ui.panel.bg}
-              defaultColor={defaultMonacoTheme.ui.panel.bg}
-            />
-            <ColorEditor
-              label="Background color for selected item in popup"
-              themePath="ui.panel.selected"
-              onColorChange={onColorChange}
-              color={themeCopy.ui.panel.selected}
-              defaultColor={defaultMonacoTheme.ui.panel.selected}
-            />
-            <ColorEditor
-              label="Popup border color"
-              themePath="ui.panel.border"
-              onColorChange={onColorChange}
-              color={themeCopy.ui.panel.border}
-              defaultColor={defaultMonacoTheme.ui.panel.border}
-            />
-            <ColorEditor
-              label="Background color of highlighted text"
-              themePath="ui.selection.bg"
-              onColorChange={onColorChange}
-              color={themeCopy.ui.selection.bg}
-              defaultColor={defaultMonacoTheme.ui.selection.bg}
-            />
-          </Box>
-          <Box>
-            <Typography variant="h6">Syntax</Typography>
-            <ColorEditor
-              label="Numbers, function names, and other key vars"
-              themePath="common.accent"
-              onColorChange={onColorChange}
-              color={themeCopy.common.accent}
-              defaultColor={defaultMonacoTheme.common.accent}
-            />
-            <ColorEditor
-              label="Keywords"
-              themePath="syntax.keyword"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.keyword}
-              defaultColor={defaultMonacoTheme.syntax.keyword}
-            />
-            <ColorEditor
-              label="Strings"
-              themePath="syntax.string"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.string}
-              defaultColor={defaultMonacoTheme.syntax.string}
-            />
-            <ColorEditor
-              label="Regexp literals as well as escapes within strings"
-              themePath="syntax.regexp"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.regexp}
-              defaultColor={defaultMonacoTheme.syntax.regexp}
-            />
-            <ColorEditor
-              label="Constants"
-              themePath="syntax.constant"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.constant}
-              defaultColor={defaultMonacoTheme.syntax.constant}
-            />
-            <ColorEditor
-              label="Entities"
-              themePath="syntax.entity"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.entity}
-              defaultColor={defaultMonacoTheme.syntax.entity}
-            />
-            <ColorEditor
-              label="'this', 'ns', types, and tags"
-              themePath="syntax.tag"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.tag}
-              defaultColor={defaultMonacoTheme.syntax.tag}
-            />
-            <ColorEditor
-              label="Netscript functions and constructors"
-              themePath="syntax.markup"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.markup}
-              defaultColor={defaultMonacoTheme.syntax.markup}
-            />
-            <ColorEditor
-              label="Errors"
-              themePath="syntax.error"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.error}
-              defaultColor={defaultMonacoTheme.syntax.error}
-            />
-            <ColorEditor
-              label="Comments"
-              themePath="syntax.comment"
-              onColorChange={onColorChange}
-              color={themeCopy.syntax.comment}
-              defaultColor={defaultMonacoTheme.syntax.comment}
-            />
-          </Box>
-        </Box>
-      </Paper>
-      <Paper sx={{ p: 1 }}>
-        <TextField
-          multiline
-          fullWidth
-          maxRows={10}
-          label={"import / export theme"}
-          value={JSON.stringify(themeCopy, undefined, 2)}
-          onChange={onThemeChange}
-        />
-        <Box sx={{ mt: 1 }}>
-          <Button onClick={() => {
-            Settings.EditorTheme = { ...themeCopy };
-            props.onClose()
-          }} startIcon={<SaveIcon />}>Save</Button>
-          <Button
-            onClick={() => {
-              setThemeCopy(defaultMonacoTheme);
-              rerender();
-            }}
-            startIcon={<HistoryIcon />}
-          >Reset to default</Button>
-        </Box>
-      </Paper>
-    </Modal>
-  )
-}
diff --git a/src/ScriptEditor/ui/themes.ts b/src/ScriptEditor/ui/themes.ts
index d9f35d100..79a698727 100644
--- a/src/ScriptEditor/ui/themes.ts
+++ b/src/ScriptEditor/ui/themes.ts
@@ -1,216 +1,3 @@
-export interface IScriptEditorTheme {
-  [key: string]: any;
-  base: string;
-  inherit: boolean;
-  common: {
-    [key: string]: string;
-    accent: string;
-    bg: string;
-    fg: string;
-  };
-  syntax: {
-    [key: string]: string;
-    tag: string;
-    entity: string;
-    string: string;
-    regexp: string;
-    markup: string;
-    keyword: string;
-    comment: string;
-    constant: string;
-    error: string;
-  };
-  ui: {
-    [key: string]: any;
-    line: string;
-    panel: {
-      [key: string]: string;
-      bg: string;
-      selected: string;
-      border: string;
-    };
-    selection: {
-      [key: string]: string;
-      bg: string;
-    };
-  };
-}
-
-export const defaultMonacoTheme: IScriptEditorTheme = {
-  base: "vs-dark",
-  inherit: true,
-  common: {
-    accent: "B5CEA8",
-    bg: "1E1E1E",
-    fg: "D4D4D4",
-  },
-  syntax: {
-    tag: "569CD6",
-    entity: "569CD6",
-    string: "CE9178",
-    regexp: "646695",
-    markup: "569CD6",
-    keyword: "569CD6",
-    comment: "6A9955",
-    constant: "569CD6",
-    error: "F44747"
-  },
-  ui: {
-    line: "1E1E1E",
-    panel: {
-      bg: "252526",
-      selected: "252526",
-      border: "1E1E1E"
-    },
-    selection: {
-      bg: "ADD6FF26"
-    }
-  }
-}
-
-// Regex used for token color validation
-// https://github.com/microsoft/vscode/blob/973684056e67153952f495fce93bf50d0ec0b892/src/vs/editor/common/languages/supports/tokenization.ts#L153
-const colorRegExp = /^#?([0-9A-Fa-f]{6})([0-9A-Fa-f]{2})?$/;
-
-// Recursively sanitize the theme data to prevent errors
-// Invalid data will be replaced with FF0000 (bright red)
-export const sanitizeTheme = (theme: IScriptEditorTheme): void => {
-  for (const [k, v] of Object.entries(theme)) {
-    switch (k) {
-      case "base":
-        if (!["vs-dark", "vs"].includes(theme.base)) theme.base = "vs-dark";
-        continue;
-      case "inherit":
-        if (typeof theme.inherit !== "boolean") theme.inherit = true;
-        continue;
-    }
-
-    const repairBlock = (block: { [key: string]: any }): void => {
-      for (const [k, v] of Object.entries(block)) {
-        if (typeof v === "object") {
-          repairBlock(v as { [key: string]: string });
-        } else {
-          if (!v.match(colorRegExp)) block[k] = "FF0000";
-        }
-      }
-    }
-    repairBlock(v);
-  }
-}
-
-export function makeTheme(theme: IScriptEditorTheme): any {
-  const themeRules = [
-    {
-      token: "",
-      background: theme.ui.line,
-      foreground: theme.common.fg
-    },
-    {
-      token: "identifier",
-      foreground: theme.common.accent
-    },
-    {
-      token: "keyword",
-      foreground: theme.syntax.keyword
-    },
-    {
-      token: "string",
-      foreground: theme.syntax.string
-    },
-    {
-      token: "string.escape",
-      foreground: theme.syntax.regexp
-    },
-    {
-      token: "comment",
-      foreground: theme.syntax.comment
-    },
-    {
-      token: "constant",
-      foreground: theme.syntax.constant
-    },
-    {
-      token: "entity",
-      foreground: theme.syntax.entity
-    },
-    {
-      token: "type",
-      foreground: theme.syntax.tag
-    },
-    {
-      token: "tag",
-      foreground: theme.syntax.tag
-    },
-    {
-      token: "regexp",
-      foreground: theme.syntax.regexp
-    },
-    {
-      token: "attribute",
-      foreground: theme.syntax.tag
-    },
-    {
-      token: "constructor",
-      foreground: theme.syntax.markup
-    },
-    {
-      token: "invalid",
-      foreground: theme.syntax.error
-    },
-    {
-      token: "number",
-      foreground: theme.common.accent
-    },
-    {
-      token: "delimiter",
-      foreground: theme.common.fg
-    },
-    // Custom tokens
-    {
-      token: "ns",
-      foreground: theme.syntax.tag
-    },
-    {
-      token: "netscriptfunction",
-      foreground: theme.syntax.markup
-    },
-    {
-      token: "otherkeywords",
-      foreground: theme.syntax.keyword
-    },
-    {
-      token: "otherkeyvars",
-      foreground: theme.common.accent
-    },
-    {
-      token: "this",
-      foreground: theme.syntax.tag
-    }
-  ];
-
-  const themeColors = Object.fromEntries([
-    ["editor.background", theme.common.bg],
-    ["editor.foreground", theme.common.fg],
-    ["editor.lineHighlightBackground", theme.ui.line],
-    ["editor.selectionBackground", theme.ui.selection.bg],
-
-    ["editorSuggestWidget.background", theme.ui.panel.bg],
-    ["editorSuggestWidget.border", theme.ui.panel.border],
-    ["editorSuggestWidget.selectedBackground", theme.ui.panel.selected],
-
-    ["editorHoverWidget.background", theme.ui.panel.bg],
-    ["editorHoverWidget.border", theme.ui.panel.border],
-
-    ["editorWidget.background", theme.ui.panel.bg],
-    ["editorWidget.border", theme.ui.panel.border],
-
-    ["input.background", theme.ui.panel.bg],
-    ["input.border", theme.ui.panel.border]
-  ].map(([k, v]) => [k, "#" + v]));
-
-  return { base: theme.base, inherit: theme.inherit, rules: themeRules, colors: themeColors }
-}
-
 export async function loadThemes(monaco: { editor: any }): Promise<void> {
   monaco.editor.defineTheme("monokai", {
     base: "vs-dark",
diff --git a/src/Settings/Settings.ts b/src/Settings/Settings.ts
index c8d1cfd0c..906c9ca2d 100644
--- a/src/Settings/Settings.ts
+++ b/src/Settings/Settings.ts
@@ -5,7 +5,6 @@ import { defaultStyles } from "../Themes/Styles";
 import { WordWrapOptions } from "../ScriptEditor/ui/Options";
 import { OverviewSettings } from "../ui/React/Overview";
 import { IStyleSettings } from "../ScriptEditor/NetscriptDefinitions";
-import { defaultMonacoTheme, IScriptEditorTheme } from "../ScriptEditor/ui/themes";
 
 /**
  * Represents the default settings the player could customize.
@@ -158,11 +157,6 @@ interface IDefaultSettings {
    *  If the game's sidebar is opened
    */
   IsSidebarOpened: boolean;
-
-  /**
-   *  Script editor theme data
-   */
-  EditorTheme: IScriptEditorTheme;
 }
 
 /**
@@ -222,8 +216,6 @@ export const defaultSettings: IDefaultSettings = {
   theme: defaultTheme,
   styles: defaultStyles,
   overview: { x: 0, y: 0, opened: true },
-
-  EditorTheme: defaultMonacoTheme,
 };
 
 /**
@@ -270,7 +262,6 @@ export const Settings: ISettings & ISelfInitializer & ISelfLoading = {
   theme: { ...defaultTheme },
   styles: { ...defaultStyles },
   overview: defaultSettings.overview,
-  EditorTheme: { ...defaultMonacoTheme },
   init() {
     Object.assign(Settings, defaultSettings);
   },
@@ -282,8 +273,6 @@ export const Settings: ISettings & ISelfInitializer & ISelfLoading = {
     delete save.styles;
     Object.assign(Settings.overview, save.overview);
     delete save.overview;
-    Object.assign(Settings.EditorTheme, save.EditorTheme);
-    delete save.EditorTheme;
     Object.assign(Settings, save);
   },
 };
diff --git a/src/Themes/ui/ThemeEditorModal.tsx b/src/Themes/ui/ThemeEditorModal.tsx
index 882b8d761..602c45655 100644
--- a/src/Themes/ui/ThemeEditorModal.tsx
+++ b/src/Themes/ui/ThemeEditorModal.tsx
@@ -366,9 +366,9 @@ export function ThemeEditorModal(props: IProps): React.ReactElement {
           sx={{ mb: 1 }}
           multiline
           fullWidth
-          maxRows={10}
+          maxRows={3}
           label={"import / export theme"}
-          value={JSON.stringify(customTheme, undefined, 2)}
+          value={JSON.stringify(customTheme)}
           onChange={onThemeChange}
         />
         <>